一样的代码在一个eclipse中运行没有问题，换到另一个就报错了，后来发现Tomcat lib下有两个jar;
mysql-connector-java-5.0.5-bin.jar
mysql-connector-java-5.0.3-bin.jar
删除mysql-connector-java-5.0.3-bin.jar后正常；
[ExamSystem] INFO [http-8080-3] org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(323) | Loading XML bean definitions from class path resource [org/springframework/jdbc/support/sql-error-codes.xml]
[ExamSystem] INFO [http-8080-3] org.springframework.jdbc.support.SQLErrorCodesFactory.<init>(128) | SQLErrorCodes loaded: [DB2, Derby, H2, HSQL, Informix, MS-SQL, MySQL, Oracle, PostgreSQL, Sybase]
org.springframework.dao.DataIntegrityViolationException: SqlMapClient operation; SQL [];
--- The error occurred in emptyForIbatisParse_sqlmap.xml.
--- The error occurred while applying a parameter map.
--- Check the EsexamPerson.update.submitExam-InlineParameterMap.
--- Check the statement (update failed).
--- Cause: com.mysql.jdbc.MysqlDataTruncation: Data truncation: Data truncated for column 'Scores' at row 1; nested exception is com.ibatis.common.jdbc.exception.NestedSQLException:
--- The error occurred in emptyForIbatisParse_sqlmap.xml.
--- The error occurred while applying a parameter map.
--- Check the EsexamPerson.update.submitExam-InlineParameterMap.
--- Check the statement (update failed).
--- Cause: com.mysql.jdbc.MysqlDataTruncation: Data truncation: Data truncated for column 'Scores' at row 1
at org.springframework.jdbc.support.SQLStateSQLExceptionTranslator.doTranslate(SQLStateSQLExceptionTranslator.java:100)
at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:72)
at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:80)
at org.springframework.orm.ibatis.SqlMapClientTemplate.execute(SqlMapClientTemplate.java:212)
at org.springframework.orm.ibatis.SqlMapClientTemplate.update(SqlMapClientTemplate.java:411)
at com.exam_system.zxks.dao.EsexamPersonDao.updateInfo(EsexamPersonDao.java:56)
at com.exam_system.zxks.service.EsexamPersonManager.updateInfo(EsexamPersonManager.java:54)
at com.exam_system.zxks.controller.EsexamArrangedController.submitExam(EsexamArrangedController.java:350)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.springframework.web.servlet.mvc.multiaction.MultiActionController.invokeNamedMethod(MultiActionController.java:473)
at org.springframework.web.servlet.mvc.multiaction.MultiActionController.handleRequestInternal(MultiActionController.java:410)
at org.springframework.web.servlet.mvc.AbstractController.handleRequest(AbstractController.java:153)
at org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter.handle(SimpleControllerHandlerAdapter.java:48)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:875)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:807)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:571)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:511)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:710)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at com.chinasofti.ro.bizframework.core.mvc.ActionFilter.doFilter(Unknown Source)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at com.chinasofti.ro.bizframework.core.web.filter.LocaleFilter.doFilterInternal(Unknown Source)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:96)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:563)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:263)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:584)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
at java.lang.Thread.run(Thread.java:595)
Caused by: com.ibatis.common.jdbc.exception.NestedSQLException:
--- The error occurred in emptyForIbatisParse_sqlmap.xml.
--- The error occurred while applying a parameter map.
--- Check the EsexamPerson.update.submitExam-InlineParameterMap.
--- Check the statement (update failed).
--- Cause: com.mysql.jdbc.MysqlDataTruncation: Data truncation: Data truncated for column 'Scores' at row 1
at com.ibatis.sqlmap.engine.mapping.statement.MappedStatement.executeUpdate(MappedStatement.java:107)
at com.ibatis.sqlmap.engine.impl.SqlMapExecutorDelegate.update(SqlMapExecutorDelegate.java:457)
at com.ibatis.sqlmap.engine.impl.SqlMapSessionImpl.update(SqlMapSessionImpl.java:90)
at org.springframework.orm.ibatis.SqlMapClientTemplate$10.doInSqlMapClient(SqlMapClientTemplate.java:413)
at org.springframework.orm.ibatis.SqlMapClientTemplate.execute(SqlMapClientTemplate.java:209)
... 42 more
Caused by: com.mysql.jdbc.MysqlDataTruncation: Data truncation: Data truncated for column 'Scores' at row 1
at com.mysql.jdbc.SQLError.convertShowWarningsToSQLWarnings(SQLError.java:717)
at com.mysql.jdbc.MysqlIO.scanForAndThrowDataTruncation(MysqlIO.java:3031)
at com.mysql.jdbc.ServerPreparedStatement.serverExecute(ServerPreparedStatement.java:1241)
at com.mysql.jdbc.ServerPreparedStatement.executeInternal(ServerPreparedStatement.java:685)
at com.mysql.jdbc.PreparedStatement.execute(PreparedStatement.java:790)
at org.apache.commons.dbcp.DelegatingPreparedStatement.execute(DelegatingPreparedStatement.java:169)
at com.ibatis.sqlmap.engine.execution.SqlExecutor.executeUpdate(SqlExecutor.java:80)
at com.ibatis.sqlmap.engine.mapping.statement.MappedStatement.sqlExecuteUpdate(MappedStatement.java:216)
at com.ibatis.sqlmap.engine.mapping.statement.MappedStatement.executeUpdate(MappedStatement.java:94)
... 46 more